The maintenance of an electric water heater is within everyone's reach providing you follow the manufacturer's guidelines. However, you are free to ask your installer for a biennial maintenance contract if possible. It is highly recommended for thermodynamic and solar water heaters.
A regular maintenance in three steps
Regardless of the type of technology, three operations must be carried out regularly:
Step 1 : Operate the pressure relief valve's lever of draining
Operate the pressure relief valve's lever of draining, in order to avoid jamming, in case of scale deposits. Ideally, do it once a month.
Step 2 : Drain your water heater tank
Drain your water heater tank (or ask a professional to do it) at least every two years in areas with hard water. This action allows to get rid of scale deposits on the heating element. Caution: do it by hand without abrasives nor chemicals. Do not forget to change the gasket when reassembling.
Step 3 : Check the electrical connections
Check the electrical connections, the state of the electric wires, the thermostats and other regulation device